
Molar conversions
Authored by GN Sai Pal
Chemistry
10th Grade
Used 3+ times

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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Mole Ratios used for conversions are derived from:
the molar mass of the reactants in the balanced chemical equation
the coefficients of the balanced chemical equation
the subscripts of the products in the balanced chemical equation
the group number of each element in the balanced chemical equation
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Mole Ratios used for conversions are derived from:
the molar mass of the reactants in the balanced chemical equation
the coefficients of the balanced chemical equation
the subscripts of the products in the balanced chemical equation
the group number of each element in the balanced chemical equation
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The number 6.02 x 1023, which is the number of particles found in a mole.
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the mole ratio of Ba(OH)2 to AlPO4?
AlPO4 + Ba(OH)2 → Al(OH)3 + Ba3(PO4)2
3 mol Ba(OH)2 / 2 mol AlPO4
1 mol Ba(OH)2/ 1 mol AlPO4
2 mol Ba(OH)2/ 3 mol AlPO4
1 mol Ba(OH)2/ 3 mol AlPO4
5.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of oxygen in MgO?
6.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the percent by mass of magnesium in MgO?
7.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Calculate the molar mass of propane (C3H8).
13 g/mol
44 g/mol
99 g/mol
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